Browsing by Author "Boysan, Murat"

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Araştırmalarda Chaid Analizinin Kullanımı ve Baş Etme Stratejileri ile İlgili Bir Uygulama
(2007) Kayrı, Murat; Boysan, Murat
Chaid analizi, örneklemi sınıflama yöntemiyle (cluster analysis) regresyon analizinin bir arada uygulandığı karma bir istatistiksel yaklaşımdır. Bu çalışmada chaid analizi kullanılarak üniversite öğrencilerinin stresli durumlarda kullandıkları baş etme stratejileri, demografik özellikleri ve psikolojik belirtilerin düzeyi arasındaki ilişkiler değerlendirilmiştir. Bu amaçla Yüzüncü Yıl Üniversitesi’nde lisans eğitimi almakta olan 329 öğrenciye Baş Etme Tutumlarını Değerlendirme Ölçeği (COPE), Kısa Belirti Listesi (SCL-53) ve demografik özellikler soru formu uygulanmıştır. Örneklemden toplanan veriler chaid analizi kullanılarak analiz edilmiştir. Elde edilen bulgular stresli durumlarda pasif baş etme stratejilerinin kullanımının psikolojik belirtilerde artışa neden olduğunu göstermiştir. Duygulara odaklanma ve duyguların dışa vurumu, davranışsal olarak kaçınma ve diğer meşguliyetleri bastırma davranışları psikolojik belirti düzeyiyle ilişkili olan baş etme stratejileridir. Öğrencilerin yaşları, cinsiyeti, medeni durumları, ekonomik düzeyi gibi demografik özelliklerinin psikolojik belirtilerle ilişkili olmadığı gözlenmiştir.
Assessment of Hierarchical Factor Structure, Reliability and Validity of Penn State Worry Questionnaire Turkish Version
(Kure Iletisim Grubu A S, 2008) Boysan, Murat; Keskin, Siddik; Besiroglu, Luetfullah
Objective: Excessive, pervasive, and uncontrollable worry are included in the diagnostic criteria of generalized anxiety disorder. Pathological worry is thought to be the cognitive component of anxiety and to be used as a moladaptive defense mechanism However, negative outcomes of pervasive and uncontrollable worry are not restricted to anxiety disorders alone, A growing number of studies point out that pathological worry is associated with panic disorder, obsessive compulsive disorder, depression, sleep disorders and psychotic disorders, Also pervasive and uncontrollable worry is significantly correlated with medical problems such as heart diseases, diabetes and cancer. In order to assess levels of worry several instruments were developed; for example The Worry Domains Questionnaire (Tallis et at 19921, The Anxious Thoughts Inventory (Wells 1994), The Meta Worry Questionnaire (Wells 1995), The Meta Cognitions Questionnaire -30 (Wells, Cartwright-Hatton, 2004). However, Penn State Worry Questionnaire (PSWQ) is the most commonly utilized measure on assessing pathological worry, This self-report measure has been translated into many languages. The measure has shown excellent psychometric properties in studies among non-clinical and clinical populations. The aim of this study was to translate the instrument into Turkish and to assess the factor structure of the instrument in a Turkish sample. Method: Sample of the study comprised of 651 undergraduates of the Yuzuncu Yil University. Factor structures were obtained by using principal components analysis The Penn State Worry Scale, The Beck Depression Inventory, The Beck Anxiety Inventory, The Rosenberg Self-Esteem Scale, and General Self Efficacy Scale were administered. Model fitness of the factor structure was evaluated by using structural equation technique The Schmid-Leimon transformation was performed to provide higher order factor loadings. PSWQ total and sub-scale scores were correlated with depression, anxiety, self-esteem, and self-efficacy in order to assess convergent validity of the measure, Comparisons between correlations were carried out using the Z test. Results: Convergent validity between PSWQ total scores and other psychological variables was compatible with previous studies. Correlation between PSWQ total scores and Beck Depression Inventory was r = 0.45. PSWQ significantly correlated with Beck Anxiety Inventory r = 0.46. Correlation between PSWQ and Rosenberg Self Esteem Scale was r = -0.36. Inner consistency of the measure was 0.88. It was found that PSWQ consisted of General Worry, Excessive/Uncontrollable Worry, and Absence of Worry factors, a three factor hierarchical structure. Discussion: PSWQ is a valid and reliable measure in assessing pathological worry in a Turkish sample. Results have shown that factor structure of the measure obtained in a Turkish sample is consistent with international samples Translation of the measure into Turkish may contribute to assessing possible outcomes of pathological worry, which is thought to play an important role in the onset of psychopathology, among Turkish sample.
Assessment of the Effects of Antihistamine Drugs on Mood, Sleep Quality, Sleepiness, and Dream Anxiety
(Taylor & Francis Ltd, 2014) Ozdemir, Pinar Guzel; Karadag, Ayse Serap; Selvi, Yavuz; Boysan, Murat; Bilgili, Serap Gunes; Aydin, Adem; Onder, Sevda
Objective. There are limited comparative studies on classic and new-generation antihistamines that affect sleep quality and mood. The purpose of this study was to determine and compare the effects of classic and new-generation antihistamines on sleep quality, daytime sleepiness, dream anxiety, and mood. Methods. Ninety-two patients with chronic pruritus completed study in the dermatology outpatient clinic. Treatments with regular recommended therapeutic doses were administered. The effects of antihistaminic drugs on mood, daytime sleepiness, dream anxiety, and sleep quality were assessed on the first day and 1 month aft er. Results. Outpatients who received cetirizine and hydroxyzine treatments reported higher scores on the depression, anxiety, and fatigue sub-scales than those who received desloratadine, levocetirizine, and rupatadine. Pheniramine and rupatadine were found to be associated with daytime sleepiness and better sleep quality. UKU side effects scale scores were significantly elevated among outpatients receiving pheniramine. Classic antihistamines increased daytime sleepiness and decreased the sleep quality scores. New-generation antihistamines reduced sleep latency and dream anxiety, and increased daytime sleepiness and sleep quality. Conclusion. Both antihistamines, significantly increased daytime sleepiness and nocturnal sleep quality. Daytime sleepiness was significantly predicted by rupadatine and pheniramine treatment. Cetirizine and hydroxyzine, seem to have negative influences on mood states. Given the extensive use of antihistamines in clinical settings, these results should be more elaborately examined in further studies.
Associations Between Chronotype, Sleep Quality, Suicidality, and Depressive Symptoms in Patients With Major Depression and Healthy Controls
(Taylor & Francis inc, 2010) Selvi, Yavuz; Aydin, Adem; Boysan, Murat; Atli, Abdullah; Agargun, Mehmed Yucel; Besiroglu, Lutfullah
Research interest concerning associations between sleep characteristics and suicidality in psychopathology has been growing. However, possible linkages of suicidality to sleep characteristics in terms of sleep quality and chronotypes among depressive patients have not been well documented. In the current study, the authors investigated the possible effects of sleep quality and chronotype on the severity of depressive symptoms and suicide risk in patients with depressive disorder and healthy controls. The study was conducted on 80 patients clinically diagnosed with major depression and 80 healthy subjects who were demographically matched with the patient group. All participants completed a questionnaire package containing self-report measures, including the Beck Depression Inventory (BDI), Pittsburgh Sleep Quality Index (PSQI), Morningness-Eveningness Questionnaire (MEQ), and Suicide Ideation Scale (SIS), and subjects were interviewed with the suicidality section of the Mini-International Neuropsychiatric Interview (MINI). Results are as follows: (a) logistic regression analyses revealed that poor sleep quality and depression symptom severity significantly predicted onset of major depression; (b) morningness-type circadian rhythm may play as a significant relief factor after onset of major depression; (c) sleep variables of chronotype and sleep quality did not significantly predict suicide ideation after controlling for depressive symptoms in the major depression group; and (d) suicide ideation and poor sleep quality were antecedents of depression symptom severity in patients with major depression, and in healthy controls. Findings are discussed under the theoretical assumptions concerning possible relations between chronotype, sleep quality, depression, and suicidality. (Author correspondence: dryavuzselvi@yahoo.com).
Associations Between Dissociation and Post-Traumatic Stress Response
(Springer international Publishing Ag, 2016) Boysan, Murat
Research has consistently pointed out post-traumatic stress reactions in the face of trauma exposure are multifaceted. In this vein, significant linkages between post-traumatic stress disorder (PTSD) and dissociative psychopathology have been demonstrated to have importance for profoundly understanding the underlying psychological mechanisms in persistent PTSD. Recent studies focusing on trauma-related responses have provided convincing evidence for the premise that post-traumatic reactions are heterogeneous in nature. Specifically, two types of post-traumatic reactions have been hypothesized in the face of traumatic symptom provocation, one predominantly characterized by reexperiencing/hyperarousal states and the other primarily dissociative. Given the heuristic that PTSD is a heterogeneous nosological entity, it was reviewed in this chapter in several lines of research that has specifically focused on complicated relations between dissociation and PTSD. Various strands of evidence for the significant linkages between PTSD and dissociation include distinct comorbity patterns of PTSD, shared etiology, factorial and taxonomic studies examining symptom overlaps between PTSD and dissociative disorders, and the role of dissociation in emotional dysregulation in PTSD. The complex relations between PTSD and dissociation are addressed in the light of recent clinical and theoretical considerations.
Associations Between Procrastination, Personality, Perfectionism, Self-Esteem and Locus of Control
(Routledge Journals, Taylor & Francis Ltd, 2017) Boysan, Murat; Kiral, Erkan
To date, many variables but particularly trait-like psychological constructs have been found to strongly contribute to procrastination but the complex relations among these variables collectively have received almost no attention. The purpose of the study was to provide a more profound understanding of the relations between procrastination, perfectionism, big five personality, locus of control and self-esteem. Young adults (162 women, 80 men: M=20.98) completed measures of academic procrastination, self-esteem, big five personality, perfectionism and locus of control. Parental criticism was a significant correlate of procrastination, while personality traits of conscientiousness, agreeableness and organisation were inversely associated with procrastination behaviour. These findings suggest that personality-based intervention approaches with the inclusion of family can be more influential in procrastination prevention and treatment.
Associations Between Sleep Quality, Severity of Dissociation, Pathological Worry, and Functional Impairment in Multiple Sclerosis: a Case-Control Study
(Kare Publ, 2020) Yildirim, Abdullah; Boysan, Murat; Cilingir, Vedat
Objective: The current study was designed to investigate differences between patients with multiple sclerosis (MS) and healthy controls regarding sleep quality, worry, and dissociative experiences. We also explored the potential correlates of functional impairment in this group. Method: Eighty-eight patients with MS and 139 healthy adults participated in the study. The mean age was 30.96 (standard deviation=8.88) years. The Expanded Disability Status Scale, Dissociative Experiences Scale (DES), Penn State Worry Questionnaire (PSWQ), and Pittsburgh Sleep Quality Index (PSQI) were completed by clinical and nonclinical subjects. Binary logistic and multiple regression analyses were performed. Results: Of the MS patients, 55.7% were identified as poor sleepers. However, total scores on the PSQI did not differ significantly between clinical and nonclinical subjects. Logistic regression analysis showed that patients with MS reported significantly lower levels of habitual sleep efficiency than healthy controls. Interestingly, healthy adults reported higher scores on pathological worry than patients with MS. Patients with MS and healthy adults did not differ in the DES scores. Duration of illness and worrisome thoughts were significant predictors of the functional impairment occurring during the course of the illness. Conclusion: Patients with MS had poor habitual sleep efficiency, which may be a significant risk factor for management and improvement of the illness. Pathological worry seems to be associated with disability status. Cognitive behavioral interventions including sleep-informed instructions should be integrated into clinical practices to enhance positive outcomes during the course of the treatment in this group.
Associations Between the Levels of Depression and the Sense of Limitedness: a Psychometric Analysis
(Cumhuriyet Univ Tip Fak Psikiyatri Anabilim Dali, 2008) Boysan, Murat; Besiroglu, Luetfullah; Kara, Hayrettin; Kayri, Murat; Keskin, Siddik
Objective: The sense of limitedness is a cognitive orientation that represents individuals' limited, fixed, and interdependent attributions about interpersonal relations and life opportunities, which are sources for growth and motivation. The cognition is thought as a risk factor for onset of depression. The aim of this study was to assess the relationship between the sense of limitedness, depression, and other risk factors for depression in the study. Methods: The Limitedness Schemas Questionnaire was developed to assess the level of limitedness orientation as a cognitive style. Data were collected from 767 university students and 142 adult subjects via the Limitedness Schemas Questionnaire, the Beck Depression Inventory, the Beck Depression Inventory, the Rosenberg Self-Esteem Scale, and the Learned Helplessness Scale. Subscales of the Limitedness Schemas Questionnaire were obtained by using principle components analysis. Correlations between psychological variables and sense of limitedness were used for evaluation of convergent validity. Results: The Limitedness Schemas Questionnaire had an inner consistency of 0.89. A four-factor structure was obtained for the 30-item Limitedness Schemas Questionnaire. Total and subscale scores of Limitedness Schemas Questionnaire were significantly correlated with depression, anxiety, self esteem, and learned helplessness. Discussion: Results have shown that the Limitedness Schemas Questionnaire is a reliable and valid construct. Results also revealed that sense of limitedness may be a cognitive vulnerability factor for both depression and for other types of psychopathology. (Anatolian Journal of Psychiatry 2008; 9: 191-196)
Associations of Dysfunctional Interpersonal Schemas With Obsessive-Compulsive and Dissociative Symptoms in University Students
(Galenos Yayincilik, 2010) Boysan, Murat; Besiroglu, Luetfullah; Kalafat, Temel; Kagan, Muecahit; Ates, Can
Objective: The aim of the study was to explore associations between obsessive-compulsive symptoms, dissociation, and dysfunctional limitedness schemas. Methods: Data were collected from 322 undergraduates. The sample was composed of 159 females (49.38%) and 163 males (50.62%). The Dissociative Experiences Scale (DES), the Padua Inventory (PI), the Clark-Beck Obsessive-Compulsive Inventory (CBOCI), the Limitedness Schemas Questionnaire (LSQ), the Beck Anxiety Inventory (BAI), and the Beck Depression Inventory (BDI) were administered to the subjects. Hierarchical regression analyses were performed after controlling for age, gender, anxiety and depression. Results: Interpersonal limitedness schemas significantly predicted higher scores on dissociation and obsessive-compulsive symptoms after controlling for age, gender, anxiety and depression. Perceived interconnectedness was also associated with obsessive impulses and checking behavior as well. Conclusion: Interpersonal negativistic schemas, as a cognitive vulnerability factor, may be important in the emergence and maintenance of obsessive-compulsive symptoms and dissociation. Results are discussed under the theoretical approaches concerning dissociation and obsessive-compulsive symptoms. (Archives of Neuropsychiatry 2010; 47: 9-14)
Benefits of Submucous Resection on Sleep Quality, Daytime and Dream Anxiety in Patients With Nasal Septal Deviation
(Springer London Ltd, 2013) Gulec, Tezay Cakin; Yoruk, Ozgur; Gulec, Mustafa; Selvi, Yavuz; Boysan, Murat; Oral, Elif; Mazlumoglu, Muhammet R.
The aim of this report was to assess the frequency of poor sleep quality, daytime and dream anxiety and their response to subsequent surgical treatment for a representative group of 68 patients with nasal septum deviation. Nasal airflows and airway resistances were measured using rhinomanometry and the participants were also asked to fill in Pittsburgh Sleep Quality Index, Beck Anxiety Inventory, and Van Dream Anxiety Scale directly before the submucous resection without turbinectomy and 2 months later. Repeated measure analyses of variance models showed that patients reported significantly lower scores of poor sleep quality, daytime anxiety, and as well as dream anxiety after surgical treatment (P < 0.01). Nasal septal surgery might have beneficial effects on sleep variables in patients with deviation.
Bilişsel Yatkınlık ile Depresyon Düzeyleri İlişkisinin Sınıflandırma ve Regresyon Ağacı Analizi ile İncelenmesi
(2008) Kayrı, Murat; Boysan, Murat
Bilimsel araştırmalarda; deneme desenlerindeki bağımlı ve bağımsız değişkenler arasındaki ilişkinin değerlendirilebilmesi önemli bir faktör olarak düşünülmektedir. Araştırma desenindeki faktörlerin birbirleri olan etkileşim modelini ortaya koymak ileri düzey tekniklerle mümkün olmaktadır. Bu anlamda Sınıflandırma ve Regresyon Ağacı (SRA) istatistik tekniği , bağımlı ve bağımsız değişkenler arasındaki ilişkiyi ve etkileşimi tespit edip, evreni homojen alt sınıflara bölebilen parametrik olmayan bir analiz yöntemidir. SRA, parametrik testler için önemsenen varsayımlardan (homojenlik, normallik gibi) sorumlu tutulmamaktadır. Veri seti Yüzüncü Yıl Üniversitesi’nden 437 öğrenciye (313 erkek, 124 bayan) uygulanan Sınırlılık Şemaları Envanteri, Genel Öz Yeterlilik ölçeği ve Beck Depresyon Envanterine verilen cevaplardan oluşmaktadır. Veri seti SRA tekniği ile analiz edilmiş olup, bağımlı ve bağımsız değişkenler arasındaki ilişki bir ağaç yapısı şeklinde modellenmiştir. SRA yöntemi, bu çalışmada sınırlılık algısının, depresyon için bir bilişsel yatkınlık faktörü olduğunu tespit etmiştir.
Burnout Among Turkish Teachers: the Influence of Sleep Quality and Job Satisfaction
(Hacettepe Univ, 2013) Merey, Zihni; Piskin, Metin; Boysan, Murat; Sehribanoglu, Sanem
Given the associations between job satisfaction and burnout, it is important to consider relations between job-related stress and sleep quality. Studies have consistently suggested that linkages between sleep problems and job-related stress are significant and have serious consequences on quality of life, work performance and motivation. Teaching is a stressful occupation, and to date possible influences of poor sleep quality on job burnout have received little attention. The aim of this study was to investigate predicting value of poor sleep quality on job burnout. Data were collected from 184 elementary school teachers. The Maschlack Burnout Inventory (MBI), Minnesota Satisfaction Questionnaire (MSQ), and Pittsburgh Sleep Quality Index (PSQI) were administered to volunteers. The linkage between poor sleep quality and job burnout was evaluated by using hierarchical regression analyses after controlling for demographical characteristics of subjects and job satisfaction. School climate, intrinsic job satisfaction, and sleep quality were significant determinants of burnout in school. Findings were discussed in the light of the theoretical considerations about job burnout.
Childhood Maltreatment Is Associated With Attachment Insecurities, Dissociation and Alexithymia in Bipolar Disorder
(Elsevier Ireland Ltd, 2018) Kefeli, Mehmet Celal; Turow, Rachel Goldsmith; Yildirim, Abdullah; Boysan, Murat
Child maltreatment is a public health issue that is a well-established risk factor for many psychological conditions, including bipolar disorder. The current study is one of the first to investigate associations among child maltreatment, dissociative symptomatology, alexithymia, anxiety, depression, and attachment insecurities. 40 patients with bipolar disorder-I and 40 healthy subjects matched for age, gender, and education participated in the study. The Dissociative Experiences Scale (DES), Somatoform Dissociation Questionnaire (SDQ), Childhood Trauma Questionnaire (CTQ-28), Toronto Alexithymia Scale (TAS-20), Depression Anxiety Stress Scale (DASS-21), and Experiences in Close Relationships-Revised (ECR-R) were completed by participants. In comparison to control participants, patients with bipolar disorder-I reported significantly more frequent abusive experiences in childhood, higher levels of attachment insecurities, more severe pathological and somatoform dissociation, as well as higher scores on measures of alexithymia, anxiety, depression and psychological stress. Reports of psychopathology among first-degree relatives (OR = 102.169, 95%IC = 4.596-2271.255; P < 0.01) and childhood emotional trauma (OR = 1.032; 95%CI = 0.782-1.363, P = 0.05) significantly contributed to bipolar disorder-I diagnosis. In contrast, absorption was negatively associated with bipolar illness (OR = 0.852; 95% CI = 0.747-0.973, P < 0.05). Our results showed significant associations between childhood trauma exposure and risk of bipolar disorder. Moreover, the results demonstrate that emotional abuse exposure predicts bipolar illness.
Childhood Trauma, Depression, and Sleep Quality and Their Association With Psychotic Symptoms and Suicidality in Schizophrenia
(Elsevier Ireland Ltd, 2017) Kilicaslan, Esin Evren; Esen, Asli Tugba; Kasal, Meltem Izci; Ozelci, Erdal; Boysan, Murat; Gulec, Mustafa
This study involved the examination of the relationship between childhood trauma and both psychotic symptoms and suicidality in patients with schizophrenia after controlling for the possible confounding factors, such as clinical features, depression, and sleep quality. The Childhood Trauma Questionnaire-Short Form, Positive and Negative Syndrome Scale (PANSS), Calgary Depression Scale for Schizophrenia (CDSS), Pittsburgh Sleep Quality Index (PSQI), and the suicidality subscale of Mini-International Neuropsychiatric Interview (MINI) were administered to 199 patients with schizophrenia. We used sequential multiple stepwise regression analyses in which positive symptoms, negative symptoms, overall psychopathology, total symptoms of schizophrenia, and suicidality were dependent variables. Depressive symptomatology and childhood physical abuse significantly contributed to positive, negative, general psychopathology, and global schizophrenia symptomatology. Interestingly, general psychopathology scores were negatively associated with childhood physical neglect. Also, subjective sleep quality significantly contributed to positive schizophrenia symptoms. Although prior suicide attempts and depression were significant antecedents of suicidal ideation, no association between suicidality and both childhood trauma and sleep was found. Childhood physical abuse could have an impact on psychopathology in schizophrenia. In addition to childhood trauma, depression, sleep disturbances, and clinical features should be considered and inquired about in the course of clinical care of schizophrenia patients.
Chronotype Differences in Suicidal Behavior and Impulsivity Among Suicide Attempters
(Taylor & Francis inc, 2011) Selvi, Yavuz; Aydin, Adem; Atli, Abdullah; Boysan, Murat; Selvi, Fatih; Besiroglu, Lutfullah
Morning- and evening-type individuals differ on a number of psychological and biological variables. There has been increasing interest in the relationship between chronotype and personality traits. The aim of this study was to investigate the relationship between impulsivity and chronotype in suicide attempters. Eighty-nine suicide attempters were included in the study, and systematic information on suicide attempts was recorded. The Morningness-Eveningness Questionnaire was applied to determine chronotype, and attempter impulsivity was measured by the total score of the Barratt Impulsiveness Scale. Significant differences between chronotype and impulsivity scores were found. Evening-type subjects reported significantly higher impulsivity scores than both neither- and morning-types. A significant association between chronotype and type of suicide attempt was detected. The largest proportion of violent suicide attempters were evening-type subjects. Violent suicide attempters also reported significantly higher impulsivity scores than nonviolent attempters. Previous studies have pointed out possible relations between eveningness and impulsivity. Current findings suggest that eveningness may be a risk factor for violent suicide attempts by increasing impulsivity. (Author correspondence: dryavuzselvi@yahoo.com).
Chronotype Effects on General Well-Being and Psychopathology Levels in Healthy Young Adults
(Taylor & Francis Ltd, 2013) Gulec, Mustafa; Selvi, Yavuz; Boysan, Murat; Aydin, Adem; Oral, Elif; Aydin, Esat Fahri
Variations in diurnal preferences for activity and sleep have long been classified as morning and evening chronotypes. Although morning and evening-types do not differ in sleep architecture, earlier studies have revealed the association between eveningness and psychopathology. However, most of these works had been conducted only with patient samples. Additionally, previous research has also discovered that morning-types have a healthier lifestyle than evening-types. Therefore, the aim of the present study was to assess the associations between chronotypes and general well-being and psychopathology levels in practically healthy young adults, whose physical and mental health were both examined precisely prior to the research, for the first time in the literature. We found that morning-type individuals have significantly better health conditions than evening-types. And, participants exhibiting a tendency to evening-type were more prone to develop psychological symptoms than subjects exhibiting morning-type chronobiological characteristics. Mental health professionals should be aware that eveningness may be a risk factor for mental and physical health even in currently well young adults.
Clark-beck Obsesyon-kompulsiyon Ölçeği’nin Türk Toplumunda Psikometrik Özellikleri
(2007) Gulec, Mustafa; Ağargün, Mehmet Yücel; Beşiroğlu, Lütfullah; Eryonucu, Buket; Boysan, Murat
Amaç: Bu çalışmada obsesif kompulsif belirtileri sıklık ve şiddet açısından değerlendirmek üzere geliştirilmiş olan Clark-Beck Obsesyon-Kompulsiyon Ölçeği’nin (CBOKÖ) psikometrik özelliklerinin araştırılması amaçlandı. Yöntem: Obsesif kompulsif bozukluk (OKB) tanısı konmuş 52 hasta, majör depresyonu olan 36 hasta ve OKB dışında başka bir anksiyete bozukluğu olan 32 hasta, 278 öğrenci ve 75 sağlıklı erişkin denek örneklem grubunu oluşturdu. Ölçeğin iç tutarlılığı, test-tekrar test güvenilirliği, eş zaman ve ayırt edici geçerliliği araştırıldı. Sonuçlar: Cronbach α katsayısı obsesyon, kompulsiyon ve toplam puan için tüm örneklemde sırasıyla 0.86, 0.83 ve 0.91 olarak bulundu. İki ayrı zaman diliminden elde edilen puanlar arasındaki bağıntı katsayıları obsesyon puanı için 0.81 (p<0.001), kompulsiyon için 0.85 (p<0.001) ve toplam puan için 0.85 (p<0.001) olarak hesaplandı. OKB olan grubun obsesyon, kompulsiyon ve toplam puanları tüm gruplardan anlamlı olarak yüksek bulundu. Hem OKB grubunda, hem de sağlıklı kişilerde CBOKÖ obsesyon, kompulsiyon ve toplam puanları obsesif kompulsif belirtileri ölçen diğer ölçeklerle (Yale-Brown Obsesyon Kompulsiyon Ölçeği ve Padua Envanteri) anlamlı derecede bağıntı göstermiştir. Tartışma: Sonuçlar, CBOKÖ’nin Türk örnekleminde obsesif-kompulsif belirtilerin değerlendirilmesinde güvenilir ve geçerli bir ölçek olduğunu göstermektedir. (Anadolu Psikiyatri Dergisi 2007; 8:197-205)
Comparison of Dream Anxiety and Subjective Sleep Quality Between Chronotypes
(Springer Japan Kk, 2012) Selvi, Yavuz; Aydin, Adem; Gulec, Mustafa; Boysan, Murat; Besiroglu, Lutfullah; Ozdemir, Pinar Guzel; Kilic, Sultan
Morning and evening-type individuals differ on a number of psychological and biological variables. In this study, we aimed to investigate the relationship between sleep quality, dream anxiety, and chronotypes. A sample of 264 university students, aged between 17 and 26 years, completed the MorningnessEveningness Questionnaire, the Pittsburgh Sleep Quality Index, and the Van Dream Anxiety Scale for assessing nightmare frequency and the dream anxiety caused by frightening dreams. Main findings indicated that evening-type individuals were significantly more likely to suffer from poor sleep quality, daytime dysfunction, nightmares, and nightmare-related disturbances as compared to either intermediate- or morning-type individuals. Previous studies have pointed out the possible connections of irregular sleepwake habits and circadian dysregulation with a tendency to reveal eveningness chronotypical characteristics. Current findings suggest that evening-type individuals are more prone to experience psychologically deteriorating nightmares and sleep-related anxiety. Poor sleep quality is also a significant antecedent of dream anxiety after controlling for age and gender.
Comparison of Venlafaxine Alone Versus Venlafaxine Plus Bright Light Therapy Combination for Severe Major Depressive Disorder
(Physicians Postgraduate Press, 2015) Ozdemir, Pinar Guzel; Boysan, Murat; Smolensky, Michael H.; Selvi, Yavuz; Aydin, Adem; Yilmaz, Ekrem
Objective: Phototherapy, ie, bright light therapy, is an effective and safe treatment of major depressive disorder (MDD). It exerts rapid mood-elevating activity, similar to antidepressant medications, most likely mediated through both monoaminergic and circadian system melatonergic mechanisms. We assessed the efficiency of bright light therapy as an adjuvant treatment to antidepressant pharmacotherapy in patients with severe MDD randomized by Hamilton Depression Rating Scale (HDRS) score to either (1) 150 mg venlafaxine hydrochloride daily at 7: 00 am or (2) 150 mg venlafaxine plus 60-minute light of 7000 lux the initial week of clinical management (venlafaxine + bright light therapy) daily at 7: 00 am. Method: 50 inpatients with severe MDD at the Psychiatry Clinic of Yuzuncu Yil University Training and Education Hospital participated. The study, which was conducted from January 2013 through June 2014, entailed patients diagnosed with severe MDD based on DSM-IV-TR for the first time. Mood states were assessed by the HDRS, Profile of Mood States (POMS), and Beck Depression Inventory (BDI) before treatment and at 1, 2, 4, and 8 weeks of treatment. Results: On the basis of the HDRS score as the primary outcome variable, both strategies significantly improved depression and negative mood states already at the first treatment week (P < .001). Differences in therapeutic effects by treatment strategy were remarkable at the second and fourth weeks of clinical management (P = .018 and P = .011, respectively), with beneficial effects continuing until trial Conclusion. Those treated with venlafaxine + bright light therapy evidenced significantly lower HDRS depression scores (P < .05) as well as BDI scores (P < .05) and POMS negative mood states scores (depression-dejection, tension-anxiety, anger-hostility, fatigue-inertia, and confusion-bewilderment subscales; all P < .05) after the second week. At week 4 of the trial, 19 (76%) of the 25 venlafaxine + bright light therapy patients versus just 11 (44%) of the 25 venlafaxine patients (P < .05) attained the target goal of treatment, a HDRS score = 13, indicative of mild depression, and, although not statistically significant in our small sample study (P = .36), at week 8, 76% of venlafaxine + bright light therapy patients (n = 19) versus just 64% of the venlafaxine patients (n = 16) experienced complete remission of depression (HDRS score = 7). Conclusions: Both venlafaxine and venlafaxine + bright light therapy treatment strategies significantly reversed the depressive mood of patients with severe MDD; however, the latter induced significantly stronger and more rapid beneficial effects. Future longer-term studies with large sample sizes, nonetheless, are required to confirm and generalize these results to patients of diverse ethnicities and cultures with both severe and mild MDD. (C) Copyright 2015 Physicians Postgraduate Press, Inc.
Development and Preliminary Psychometric Properties of an Instrument for the Measurement of Obsessional Dissociative Experiences: the Van Obsessional Dissociation Questionnaire (vod-Q)
(Springer, 2018) Boysan, Murat; Yildirim, Abdullah; Besiroglu, Lutfullah; Kefeli, Mehmet Celal; Kagan, Mucahit
A growing body of research evidence documents the substantial associations between obsessive-compulsive disorder (OCD) and dissociation. This article describes the development and preliminary psychometric properties of the Van Obsessional Dissociation Questionnaire (VOD-Q). Obsessional dissociation is defined as a tendency to dissociate in reaction to distressing, unwanted and intrusive thoughts, images and impulses. The screening tool is conceptualized to tap obsessional dissociation across three dimensions: obsessional absorption, obsessional depersonalization/ derealization and obsessional amnesia. The VOD-Q, the Padua Inventory-Revised (PI-R), the Dissociative Experiences Scale (DES), and the Obsessive Belief Questionnaire (OBQ-44) were administered in this study. The results showed that the VOD-Q had excellent test-retest reliability (ranging from 0.73 to 0.90) and internal consistency (ranging from 0.90 to 0.97). The VOD-Q total and subscale scores were significantly associated with measures of obsessive-compulsive symptoms and dissociative experiences. OCD patients scored significantly higher on the VOD-Q than community participants. Based on the present findings, the VOD-Q appears to be a reliable and valid instrument for the measurement of obsessional dissociative experiences.